hmm she did...
She did well tbh, her first peaked at 2 but she does better now. She done well, but she's also improved in consistency and has gained a bigger fanbase, it all takes time.
Not many people start at the top like teayeon, example IU. It took her awhile to Get as big as she is now, it's not impossible for any idol, so long as they're consistent and make good music.